6,775 results on '"Fujiwara, M."'
Search Results
2. Observation of the effect of gravity on the motion of antimatter.
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Anderson, E, Baker, C, Bertsche, W, Bhatt, N, Bonomi, G, Capra, A, Carli, I, Cesar, C, Charlton, M, Christensen, A, Collister, R, Cridland Mathad, A, Duque Quiceno, D, Eriksson, S, Evans, A, Evetts, N, Fabbri, S, Ferwerda, A, Friesen, T, Fujiwara, M, Gill, D, Golino, L, Gomes Gonçalves, M, Grandemange, P, Granum, P, Hangst, J, Hayden, M, Hodgkinson, D, Hunter, E, Isaac, C, Jimenez, A, Johnson, M, Jones, J, Jones, S, Jonsell, S, Khramov, A, Madsen, N, Martin, L, Massacret, N, Maxwell, D, McKenna, J, Menary, S, Momose, T, Mostamand, M, Mullan, P, Nauta, J, Olchanski, K, Oliveira, A, Peszka, J, Powell, A, Rasmussen, C, Robicheaux, F, Sacramento, R, Sameed, M, Sarid, E, Schoonwater, J, Silveira, D, Singh, J, Smith, G, So, C, Stracka, S, Stutter, G, Tharp, T, Thompson, K, Thompson, R, Thorpe-Woods, E, Torkzaban, C, Urioni, M, Woosaree, P, Wurtele, Jonathan, and Fajans, Joel
- Abstract
Einsteins general theory of relativity from 19151 remains the most successful description of gravitation. From the 1919 solar eclipse2 to the observation of gravitational waves3, the theory has passed many crucial experimental tests. However, the evolving concepts of dark matter and dark energy illustrate that there is much to be learned about the gravitating content of the universe. Singularities in the general theory of relativity and the lack of a quantum theory of gravity suggest that our picture is incomplete. It is thus prudent to explore gravity in exotic physical systems. Antimatter was unknown to Einstein in 1915. Diracs theory4 appeared in 1928; the positron was observed5 in 1932. There has since been much speculation about gravity and antimatter. The theoretical consensus is that any laboratory mass must be attracted6 by the Earth, although some authors have considered the cosmological consequences if antimatter should be repelled by matter7-10. In the general theory of relativity, the weak equivalence principle (WEP) requires that all masses react identically to gravity, independent of their internal structure. Here we show that antihydrogen atoms, released from magnetic confinement in the ALPHA-g apparatus, behave in a way consistent with gravitational attraction to the Earth. Repulsive antigravity is ruled out in this case. This experiment paves the way for precision studies of the magnitude of the gravitational acceleration between anti-atoms and the Earth to test the WEP.
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- 2023
3. Design and Performance of a Novel Low Energy Multi-Species Beamline for the ALPHA Antihydrogen Experiment
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Baker, C. J., Bertsche, W., Capra, A., Cesar, C. L., Charlton, M., Christensen, A. J., Collister, R., Mathad, A. Cridland, Eriksson, S., Evans, A., Evetts, N., Fabbri, S., Fajans, J., Friesen, T., Fujiwara, M. C., Gill, D. R., Grandemange, P., Granum, P., Hangst, J. S., Hayden, M. E., Hodgkinson, D., Isaac, C. A., Johnson, M. A., Jones, J. M., Jones, S. A., Khramov, A., Kurchaninov, L., Madsen, N., Maxwell, D., McKenna, J. T. K., Menary, S., Momose, T., Mullan, P. S., Munich, J. J., Olchanski, K., Peszka, J., Powell, A., Rasmussen, C. O., Sacramento, R. L., Sameed, M., Sarid, E., Silveira, D. M., So, C., Starko, D. M., Stutter, G., Tharp, T. D., Thompson, R. I., Torkzaban, C., van der Werf, D. P., and Wurtele, J. S.
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Physics - Accelerator Physics - Abstract
The ALPHA Collaboration, based at the CERN Antiproton Decelerator, has recently implemented a novel beamline for low-energy ($\lesssim$ 100 eV) positron and antiproton transport between cylindrical Penning traps that have strong axial magnetic fields. Here, we describe how a combination of semianalytical and numerical calculations were used to optimise the layout and design of this beamline. Using experimental measurements taken during the initial commissioning of the instrument, we evaluate its performance and validate the models used for its development. By combining data from a range of sources, we show that the beamline has a high transfer efficiency, and estimate that the percentage of particles captured in the experiments from each bunch is (78 $\pm$ 3)% for up to $10^{5}$ antiprotons, and (71 $\pm$ 5)% for bunches of up to $10^{7}$ positrons., Comment: 15 pages, 15 figures
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- 2022
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4. Validation and Improvement of the Saga Fall Risk Model: A Multicenter Retrospective Observational Study
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Tago M, Hirata R, Katsuki NE, Nakatani E, Tokushima M, Nishi T, Shimada H, Yaita S, Saito C, Amari K, Kurogi K, Oda Y, Shikino K, Ono M, Yoshimura M, Yamashita S, Tokushima Y, Aihara H, Fujiwara M, and Yamashita SI
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accidental falls ,inpatients ,validation study ,accident prevention ,Geriatrics ,RC952-954.6 - Abstract
Masaki Tago,1 Risa Hirata,1 Naoko E Katsuki,1 Eiji Nakatani,2 Midori Tokushima,1 Tomoyo Nishi,1 Hitomi Shimada,3 Shizuka Yaita,1 Chihiro Saito,4 Kaori Amari,5 Kazuya Kurogi,6 Yoshimasa Oda,7 Kiyoshi Shikino,8,9 Maiko Ono,10 Mariko Yoshimura,11 Shun Yamashita,1 Yoshinori Tokushima,1 Hidetoshi Aihara,1 Motoshi Fujiwara,1 Shu-ichi Yamashita1 1Department of General Medicine, Saga University Hospital, Saga, Japan; 2Graduate School of Public Health, Shizuoka Graduate University of Public Health, Shizuoka, Japan; 3Shimada Hospital of Medical Corporation Chouseikai, Saga, Japan; 4Shizuoka General Hospital, Shizuoka, Japan; 5Department of Emergency Medicine, Saga-Ken Medical Centre Koseikan, Saga, Japan; 6Department of General Medicine, National Hospital Organization Ureshino Medical Center, Saga, Japan; 7Department of General Medicine, Yuai-Kai Foundation and Oda Hospital, Saga, Japan; 8Department of General Medicine, Chiba University Hospital, Chiba, Japan; 9Department of Community-Oriented Medical Education, Chiba University Graduate School of Medicine, Chiba, Japan; 10Department of General Medicine, Karatsu Municipal Hospital, Saga, Japan; 11Safety Management Section, Saga University Hospital, Saga, JapanCorrespondence: Masaki Tago, Department of General Medicine, Saga University Hospital, 5-1-1 Nabeshima, Saga, 849-8501, Japan, Tel +81 952 34 3238, Fax +81 952 34 2029, Email tagomas@cc.saga-u.ac.jpPurpose: We conducted a pilot study in an acute care hospital and developed the Saga Fall Risk Model 2 (SFRM2), a fall prediction model comprising eight items: Bedriddenness rank, age, sex, emergency admission, admission to the neurosurgery department, history of falls, independence of eating, and use of hypnotics. The external validation results from the two hospitals showed that the area under the curve (AUC) of SFRM2 may be lower in other facilities. This study aimed to validate the accuracy of SFRM2 using data from eight hospitals, including chronic care hospitals, and adjust the coefficients to improve the accuracy of SFRM2 and validate it.Patients and Methods: This study included all patients aged ≥ 20 years admitted to eight hospitals, including chronic care, acute care, and tertiary hospitals, from April 1, 2018, to March 31, 2021. In-hospital falls were used as the outcome, and the AUC and shrinkage coefficient of SFRM2 were calculated. Additionally, SFRM2.1, which was modified from the coefficients of SFRM2 using logistic regression with the eight items comprising SFRM2, was developed using two-thirds of the data randomly selected from the entire population, and its accuracy was validated using the remaining one-third portion of the data.Results: Of the 124,521 inpatients analyzed, 2,986 (2.4%) experienced falls during hospitalization. The median age of all inpatients was 71 years, and 53.2% were men. The AUC of SFRM2 was 0.687 (95% confidence interval [CI]:0.678– 0.697), and the shrinkage coefficient was 0.996. SFRM2.1 was created using 81,790 patients, and its accuracy was validated using the remaining 42,731 patients. The AUC of SFRM2.1 was 0.745 (95% CI: 0.731– 0.758).Conclusion: SFRM2 showed good accuracy in predicting falls even on validating in diverse populations with significantly different backgrounds. Furthermore, the accuracy can be improved by adjusting the coefficients while keeping the model’s parameters fixed.Keywords: accidental falls, inpatients, validation study, accident prevention
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- 2024
5. Beyond survival estimation: mark-recapture, matrix population models, and population dynamics
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Caswell, H. and Fujiwara, M.
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Matrix population models ,Right whale ,Eubalaena glacialis ,Sensitivity ,Elasticity ,Zoology ,QL1-991 - Abstract
Survival probability is of interest primarily as a component of population dynamics. Only when survival estimates are included in a demographic model are their population implications apparent. Survival describes the transition between living and dead. Biologically important as this transition is, it is only one of many transitions in the life cycle. Others include transitions between immature and mature, unmated and mated, breeding and non¿breeding, larva and adult, small and large, and location x and location y. The demographic consequences of these transitions can be captured by matrix population models, and such models provide a natural link connecting multi-stage mark-recapture methods and population dynamics. This paper explores some of those connections, with examples taken from an ongoing analysis of the endangered North Atlantic right whale (Eubalaena glacialis). Formulating problems in terms of a matrix population model provides an easy way to compute the likelihood of capture histories. It extends the list of demographic parameters for which maximum likelihood estimates can be obtained to include population growth rate, the sensitivity and elasticity of population growth rate, the net reproductive rate, generation time, measures of transient dynamics. In the future, multi-stage mark-recapture methods, linked to matrix population models, will become an increasingly important part of demography.
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- 2004
6. Geriatric nutritional risk index as the prognostic factor in older patients with fragility hip fractures
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Tsutsui, T., Fujiwara, T., Matsumoto, Y., Kimura, A., Kanahori, M., Arisumi, S., Oyamada, A., Ohishi, M., Ikuta, K., Tsuchiya, K., Tayama, N., Tomari, S., Miyahara, H., Mae, T., Hara, T., Saito, T., Arizono, T., Kaji, K., Mawatari, T., Fujiwara, M., Takasaki, M., Shin, K., Ninomiya, K., Nakaie, K., Antoku, Y., Iwamoto, Y., and Nakashima, Y.
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- 2023
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7. A Multicenter Randomized Phase II Trial Investigating the Effect of Polyglycolic Acid Sheet on the Prevention of Pancreatic Fistula After Gastrectomy with Prophylactic Lymph Node Dissection
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Shimizu D, Tanaka C, Kanda M, Nakanishi K, Ito S, Kuwatsuka Y, Ando M, Murotani K, Fujiwara M, and Kodera Y
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gastric cancer ,pancreatic fistula ,polyglycolic acid sheet ,protocol ,randomized clinical trial ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Dai Shimizu,1 Chie Tanaka,1 Mitsuro Kanda,1 Koki Nakanishi,1 Seiji Ito,2 Yachiyo Kuwatsuka,3 Masahiko Ando,3 Kenta Murotani,4 Michitaka Fujiwara,5 Yasuhiro Kodera1 1Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan; 2Department of Gastroenterological Surgery, Aichi Cancer Center, Nagoya, Japan; 3Department of Advanced Medicine, Nagoya University Hospital, Nagoya, Japan; 4Biostatistics Center, Graduate School of Medicine, Kurume University, Kurume, Japan; 5Department of Medical Equipment and Supplies Management, Nagoya University Hospital, Nagoya, JapanCorrespondence: Dai Shimizu, Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan, Tel +81-52-744-2249, Fax +81-52-744-2255, Email d-shimizu@med.nagoya-u.ac.jpAbstract: Pancreatic fistula after gastrectomy with lymph node dissection is associated with prolonged hospital stay and critical complications such as intra-abdominal bleeding and sepsis. Polyglycolic acid (PGA) sheets are absorbable suture reinforcement materials. A randomized Phase II trial has been planned to evaluate the effect of PGA sheets on preventing postoperative pancreatic fistula. A total of 320 patients will be recruited from thirteen institutions. Patients who are scheduled to undergo distal or total gastrectomy will be randomly allocated into the PGA group or control group, and the dissected area around the pancreas will be covered by the PGA sheet in the PGA group. The primary endpoint will be the maximum value of drain amylase concentration up to 5 days after surgery. The secondary endpoints will be as follows: transition of value of amylases of drain discharge, incidence of pancreatic fistula, incidence of intra-abdominal abscess, white blood cell count, value of C-reactive protein, incidence of postoperative complication, duration of antibiotic agents administration, duration of abdominal drainage, usage of octreotide, duration of hospital stay, incidence of bleeding in abdominal cavity, mortality, and incidence of reoperation.Keywords: gastric cancer, pancreatic fistula, polyglycolic acid sheet, protocol, randomized clinical trial
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- 2023
8. Oral Corticosteroid Reduction Between Biologics Initiated and Non-Initiated Patients with Severe Asthma
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Tanaka A, Takahashi M, Fukui A, Arita Y, Fujiwara M, Makita N, and Tashiro N
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severe asthma ,asthma exacerbation ,oral corticosteroid ,biologics ,retrospective cohort study ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Akihiko Tanaka,1 Mai Takahashi,2 Ayako Fukui,3 Yoshifumi Arita,3 Masakazu Fujiwara,3 Naoyuki Makita,3 Naoki Tashiro3 1Division of Respiratory Medicine and Allergology, Department of Medicine, School of Medicine, Showa University, Tokyo, Japan; 2Medical, AstraZeneca K.K., Tokyo, Japan; 3Medical, AstraZeneca K.K., Osaka, JapanCorrespondence: Akihiko Tanaka, Division of Respiratory Medicine and Allergology, Department of Medicine, School of Medicine, Showa University, 1-5-8 Hatanodai Shinagawa-ku, Tokyo, 142-8666, Japan, Tel +81 3-3784-8000, Fax +81 3-3784-8517, Email tanakaa@med.showa-u.ac.jpPurpose: The oral corticosteroid (OCS)-sparing effect of several biologics (BIOs) has been shown in clinical trials. To date, no study has evaluated differences in OCS dose reduction between BIO-initiated and BIO-non-initiated patients in real-world clinical practice. We compared dose reductions in maintenance OCS between BIO-initiated and BIO-non-initiated severe asthma patients in a real-world setting.Patients and Methods: This retrospective cohort study used the data from the Diagnosis Procedure Combination database of Medical Data Vision in Japan. Severe asthma patients with continuous use of OCS were selected from December 2015 to February 2020. The primary endpoint was the proportion reduction in daily maintenance OCS dose from Week 0 to Week 24. Analyses were performed using inverse probability treatment weighting.Results: In total, 2927 patients were included (BIO-initiated: 239 patients, BIO-non-initiated: 2688 patients). Adjusted median (quartile [Q] 1–Q3) proportion reduction in daily maintenance OCS dose at Week 24 from the index date was 25.0% (0.0– 100.0%) and 0.0% (0.0– 83.3%) in the BIO-initiated and BIO-non-initiated groups, respectively (Hodges–Lehmann estimate [95% confidence interval], 0.0000% [0.0000– 0.3365%]). Respective proportions of patients in the BIO-initiated and BIO-non-initiated groups achieving dose reductions from the index date in the daily maintenance OCS dose at Week 24 were > 0% reduction, 56.6% and 44.1% (odds ratio [OR] 1.6554); ≥ 25% reduction, 50.5% and 40.6% (OR 1.4888); ≥ 50% reduction, 42.8% and 33.7% (OR 1.4714); and 100% reduction, 26.2% and 24.4% (OR 1.1005).Conclusion: Among severe asthma patients, the daily dose of maintenance OCS was reduced with BIO treatment. Although a higher percentage of patients in the BIO-initiated group had an OCS reduction of ≤ 75% than the BIO-non-initiated group, we found no clear difference in OCS reduction. Our findings will be justified by further research that incorporates a longer observation period and variables excluded from this study.Trial Registration: ClinicalTrials.gov (NCT05136547).Keywords: severe asthma, asthma exacerbation, oral corticosteroid, biologics, retrospective cohort study
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- 2023
9. Search for $\alpha$ condensed states in $^{13}$C using $\alpha$ inelastic scattering
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Inaba, K., Sasamoto, Y., Kawabata, T., Fujiwara, M., Funaki, Y., Hatanaka, K., Itoh, K., Itoh, M., Kawase, K., Matsubara, H., Maeda, Y., Suda, K., Sakaguchi, S., Shimizu, Y., Tamii, A., Tameshige, Y., Uchida, M., Uesaka, T., Yamada, T., and Yoshida, H. P.
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Nuclear Experiment ,Nuclear Theory - Abstract
We searched for the $\alpha$ condensed state in $^{13}$C by measuring the $\alpha$ inelastic scattering at $E_{\alpha} = 388$ MeV at forward angles including 0 degrees. We performed the distorted-wave Born-approximation calculation with the single-folding potential and the multipole decomposition analysis to determine the isoscalar transition strengths in $^{13}$C. We found a bump structure around $E_x = 12.5$ MeV due to the isoscalar monopole ($IS0$) transition. A peak-fit analysis suggested that this bump consisted of several $1/2^-$ states. We propose that this bump is due to the mirror state of the 13.5 MeV-state in $^{13}$N, which dominantly decays to the $\alpha$ condensed state in $^{12}$C. It was speculated that the $1/2^-$ states around $E_x = 12.5$ MeV were candidates for the $\alpha$ condensed state, but the $3\alpha + n$ orthogonality condition model suggests that the $\alpha$ condensed state is unlikely to emerge as the negative parity states. We also found two $1/2^+$ or $3/2^+$ states at $E_x = 14.5$ and 16.1 MeV excited with the isoscalar dipole ($IS1$) strengths. We suggest that the 16.1-MeV state is a possible candidate for the $\alpha$ condensed state predicted by the cluster-model calculations on the basis of the good correspondence between the experimental and calculated level structures. However, the theoretical $IS1$ transition strength for this state is significantly smaller than the measured value. Further experimental information is strongly desired to establish the $\alpha$ condensed state in $^{13}$C., Comment: 24 pages, 12 figures, published in PTEP
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- 2021
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10. Limit on the Electric Charge of Antihydrogen
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Capra, A., Amole, C., Ashkezari, M. D., Baquero-Ruiz, M., Bertsche, W., Butler, E., Cesar, C. L., Charlton, M., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M. C., Gill, D. R., Gutierrez, A., Hangst, J. S., Hardy, W. N., Hayden, M. E., Isaac, C. A., Jonsell, S., Kurchaninov, L ., Little, A., McKenna, J. T. K., Menary, S., Napoli, S. C., Nolan, P., Olchanski, K., Olin, A., Povilus, A., Pusa, P., Robicheaux, F., Sarid, E., Silveira, D. M., So, C., Tharp, T. D., Thompson, R. I., van der Werf, D. P., Vendeiro, Z., Wurtele, J. S., Zhmoginov, A. I., and Charman, A. E.
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Physics - Atomic Physics - Abstract
The ALPHA collaboration has successfully demonstrated the production and the confinement of cold antihydrogen, $\overline{\mathrm{H}}$. An analysis of trapping data allowed a stringent limit to be placed on the electric charge of the simplest antiatom. Charge neutrality of matter is known to a very high precision, hence a neutrality limit of $\overline{\mathrm{H}}$ provides a test of CPT invariance. The experimental technique is based on the measurement of the deflection of putatively charged $\overline{\mathrm{H}}$ in an electric field. The tendency for trapped $\overline{\mathrm{H}}$ atoms to be displaced by electrostatic fields is measured and compared to the results of a detailed simulation of $\overline{\mathrm{H}}$ dynamics in the trap. An extensive survey of the systematic errors is performed, with particular attention to those due to the silicon vertex detector, which is the device used to determine the $\overline{\mathrm{H}}$ annihilation position. The limit obtained on the charge of the $\overline{\mathrm{H}}$ atom is \mbox{$ Q = (-1.3\pm1.8\pm0.4)\times10^{-8}$}, representing the first precision measurement with $\overline{\mathrm{H}}$., Comment: 5 pages, 3 figures
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- 2021
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11. Shallow NV centers augmented by exploiting n-type diamond
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Watanabe, A., Nishikawa, T., Kato, H., Fujie, M., Fujiwara, M., Makino, T., Yamasaki, S., Herbschleb, E. D., and Mizuochi, N.
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Condensed Matter - Materials Science - Abstract
Creation of nitrogen-vacancy (NV) centers at the nanoscale surface region in diamond, while retaining their excellent spin and optical properties, is essential for applications in quantum technology. Here, we demonstrate the extension of the spin-coherence time ($\it{T}$${_2}$), the stabilization of the charge state, and an improvement of the creation yield of NV centers formed by the ion-implantation technique at a depth of $\sim$15 nm in phosphorus-doped n-type diamond. The longest $\it{T}$${_2}$ of about 580 $\mu$s of a shallow NV center approaches the one in bulk diamond limited by the nuclear spins of natural abundant $^{13}$C. The averaged $\it{T}$${_2}$ in n-type diamond is over 1.7 times longer than that in pure non-doped diamond. Moreover, the stabilization of the charge state and the more than twofold improvement of the creation yield are confirmed. The enhancements for the shallow NV centers in an n-type diamond-semiconductor are significant for future integrated quantum devices., Comment: 21 pages, 5 figures, 1 table
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- 2020
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12. Signature of a possible $\alpha$-cluster state in $N=Z$ doubly-magic $^{56}$Ni
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Bagchi, S., Akimune, H., Gibelin, J., Harakeh, M. N., Kalantar-Nayestanaki, N., Achouri, N. L., Bastin, B., Boretzky, K., Bouzomita, H., Caamaño, M., Càceres, L., Damoy, S., Delaunay, F., Fernández-Domínguez, B., Fujiwara, M., Garg, U., Grinyer, G. F., Kamalou, O., Khan, E., Krasznahorkay, A., Lhoutellier, G., Libin, J. F., Lukyanov, S., Mazurek, K., Najafi, M. A., Pancin, J., Penionzkhevich, Y., Perrot, L., Raabe, R., Rigollet, C., Roger, T., Sambi, S., Savajols, H., Senoville, M., Stodel, C., Suen, L., Thomas, J. C., Vandebrouck, M., and Van de Walle, J.
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Nuclear Experiment - Abstract
An inelastic $\alpha$-scattering experiment on the unstable $N=Z$, doubly-magic $^{56}$Ni nucleus was performed in inverse kinematics at an incident energy of 50 A.MeV at GANIL. High multiplicity for $\alpha$-particle emission was observed within the limited phase-space of the experimental setup. This observation cannot be explained by means of the statistical-decay model. The ideal classical gas model at $kT$ = 0.4 MeV reproduces fairly well the experimental momentum distribution and the observed multiplicity of $\alpha$ particles corresponds to an excitation energy around 96 MeV. The method of distributed $m\alpha$-decay ensembles is in agreement with the experimental results if we assume that the $\alpha$-gas state in $^{56}$Ni exists at around $113^{+15}_{-17}$ MeV. These results suggest that there may exist an exotic state consisting of many $\alpha$ particles at the excitation energy of $113^{+15}_{-17}$ MeV., Comment: Accepted for publication in the European Physical Journal A
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- 2020
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13. Electrical Control for Extension of Ramsey Spin Coherence Time of Ion-Implanted Nitrogen Vacancy Centers in diamond
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Kobayashi, S., Matsuzaki, Y., Morishita, H., Miwa, S., Suzuki, Y., Fujiwara, M., and Mizuochi, N.
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Quantum Physics - Abstract
The extension of the spin coherence times is a crucial issue for quantum information and quantum sensing. In solid state systems, suppressing noises with various techniques have been demonstrated. On the other hand, an electrical control for suppression is important toward individual controls of on-chip quantum information devices. Here we show the electrical control for extension of the spin coherence times of 40 nm-deep ion-implanted single nitrogen vacancy center spins in diamond by suppressing magnetic noises. We applied 120 V DC across two contacts spaced by 10 micrometers. The spin coherence times, estimated from a free-induction-decay and a Hahn-echo decay, were increased up to about 10 times (reaching 10 microseconds) and 1.4 times (reaching 150 microseconds), respectively. From the quantitative analysis, the dominant decoherence source depending on the applied static electric field was elucidated. The electrical control for extension can deliver a sensitivity enhancement to the DC sensing of temperature, pressure and electric (but not magnetic) fields, opening a new technique in solid-state quantum information devices.
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- 2020
14. Characteristics of Obstacles for Dislocation Movement in the Pre-Multiplication Region in White Tin Single Crystals
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Hirokawa, T., primary and Fujiwara, M., additional
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- 2023
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15. Compressional-mode resonances in the molybdenum isotopes: Emergence of softness in open-shell nuclei near A=90
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Howard, K. B., Garg, U., Itoh, M., Akimune, H., Fujiwara, M., Furuno, T., Gupta, Y. K., Harakeh, M. N., Inaba, K., Ishibashi, Y., Karasudani, K., Kawabata, T., Kohda, A., Matsuda, Y., Murata, M., Nakamura, S., Okamoto, J., Ota, S., Piekarewicz, J., Sakaue, A., Senyigit, M., Tsumura, M., and Yang, Y.
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Nuclear Experiment ,Nuclear Theory - Abstract
"Why are the tin isotopes soft?" has remained, for the past decade, an open problem in nuclear structure physics: models which reproduce the isoscalar giant monopole resonance (ISGMR) in the "doubly-closed shell" nuclei, $^{90}$Zr and $^{208}$Pb, overestimate the ISGMR energies of the open-shell tin and cadmium nuclei, by as much as 1 MeV. In an effort to shed some light onto this problem, we present results of detailed studies of the ISGMR in the molybdenum nuclei, with the goal of elucidating where--and how--the softness manifests itself between $^{90}$Zr and the cadmium and tin isotopes. The experiment was conducted using the $^{94,96,98,100}$Mo($\alpha,\alpha^\prime$) reaction at $E_\alpha = 386$ MeV. A comparison of the results with relativistic, self-consistent Random-Phase Approximation calculations indicates that the ISGMR response begins to show softness in the molybdenum isotopes beginning with $A=92$., Comment: Accepted for publication to Physics Letters B
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- 2020
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16. Monitoring the build-up of hydrogen polarization for polarized Hydrogen-Deuteride (HD) targets with NMR at 17 Tesla
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Ohta, T., Fujiwara, M., Hotta, T., Ide, I., Ishizaki, K., Kohri, H., Yanai, Y., and Yosoi, M.
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Physics - Instrumentation and Detectors ,Nuclear Experiment - Abstract
We report on the frozen-spin polarized hydrogen--deuteride (HD) targets for photoproduction experiments at SPring-8/LEPS. Pure HD gas with a small amount of ortho-H2 (~0.1%) was liquefied and solidified by liquid helium. The temperature of the produced solid HD was reduced to about 30 mK with a dilution refrigerator. A magnetic field (17 T) was applied to the HD to grow the polarization with the static method. After the aging of the HD at low temperatures in the presence of a high-magnetic field strength for 3 months, the polarization froze. Almost all ortho-H2 molecules were converted to para-H2 molecules that exhibited weak spin interactions with the HD. If the concentration of the ortho-H2 was reduced at the beginning of the aging process, the aging time can be shortened. We have developed a new nuclear magnetic resonance (NMR) system to measure the relaxation times (T1) of the 1H and 2H nuclei with two frequency sweeps at the respective frequencies of 726 and 111 MHz, and succeeded in the monitoring of the polarization build-up at decreasing temperatures from 600 to 30 mK at 17 T. This technique enables us to optimize the concentration of the ortho-H2 and to efficiently polarize the HD target within a shortened aging time., Comment: 6 pages, 5 figures
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- 2020
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17. POS1104 SERUM C-REACTIVE PROTEIN LEVELS CAN PREDICT ORGAN DAMAGE WITHIN 2 YEARS IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS WHO MEET LUPUS LOW DISEASE ACTIVITY STATE
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Nakajima, T., primary, Onishi, A., additional, Onizawa, H., additional, Shirakashi, M., additional, Hiwa, R., additional, Tsuji, H., additional, Kitagori, K., additional, Akizuki, S., additional, Nakashima, R., additional, Yoshifuji, H., additional, Tanaka, M., additional, Takatani, A., additional, Onishi, T., additional, Kida, T., additional, Miyawaki, Y., additional, Shimizu, T., additional, Kajiyama, H., additional, Yoshimi, R., additional, Matsuo, Y., additional, Shimojima, Y., additional, Sato, S., additional, Ohno, S., additional, Fujiwara, M., additional, Yajima, N., additional, Sada, K. E., additional, and Morinobu, A., additional
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- 2024
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18. POS0427 SEASONAL VARIATIONS OF TYPE I INTERFERON ACTIVITY IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS
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Miyachi, K., primary, Iwamoto, T., additional, Kojima, S., additional, Ida, T., additional, Yasui, M., additional, Nakagomi, D., additional, Matsuki, A., additional, Kagami, S. I., additional, Kobayashi, Y., additional, Tamachi, T., additional, Fujiwara, M., additional, Kawashima, H., additional, Oya, Y., additional, Sanayama, Y., additional, Furuta, S., additional, Ikeda, K., additional, and Nakajima, H., additional
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- 2024
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19. POS0737 HIGHER HEALTH-RELATED QUALITY OF LIFE MEASURED BY LUPUS PATIENT-REPORTED OUTCOME WAS ASSOCIATED WITH LOWER INCREASE IN DAMAGE ACCRUAL IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS: A LONGITUDINAL STUDY USING THE JAPANESE MULTICENTER REGISTRY
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Nose, Y., primary, Onishi, A., additional, Nishimura, K., additional, Yamamoto, Y., additional, Yamada, H., additional, Sendo, S., additional, Ueda, Y., additional, Sada, K. E., additional, Ichinose, K., additional, Yoshimi, R., additional, Ohno, S., additional, Yajima, N., additional, Kajiyama, H., additional, Sato, S., additional, Shimojima, Y., additional, Fujiwara, M., additional, Kida, T., additional, Miyawaki, Y., additional, Matsuo, Y., additional, Tsuji, H., additional, Morinobu, A., additional, and Saegusa, J., additional
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- 2024
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20. Hands-on Clinical Clerkship at the Department of General Medicine in a University Hospital Improves Medical Students’ Self-Evaluation of Skills of Performing Physical Examinations and Informed Consent: A Questionnaire-Based Prospective Study
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Tokushima Y, Tago M, Tokushima M, Yamashita S, Hirakawa Y, Aihara H, Katsuki NE, Fujiwara M, and Yamashita SI
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general medicine ,hands-on clinical clerkship ,medical education ,observation-based training ,Medicine (General) ,R5-920 - Abstract
Yoshinori Tokushima,1,2 Masaki Tago,1,2 Midori Tokushima,1,3 Shun Yamashita,1 Yuka Hirakawa,1 Hidetoshi Aihara,1 Naoko E Katsuki,1 Motoshi Fujiwara,1 Shu-ichi Yamashita1 1Department of General Medicine, Saga University Hospital, Saga, Japan; 2Community Medical Support Institute, Faculty of Medicine, Saga University, Saga, Japan; 3Saga Medical Career Support Center, Saga University Hospital, Saga, JapanCorrespondence: Masaki Tago, Department of General Medicine, Saga University Hospital, 5-1-1 Nabeshima, Saga, 849-8501, Japan, Tel +81 952 34 3238, Fax +81 952 34 2029, Email tagomas@cc.saga-u.ac.jpIntroduction: The educational effects of a hands-on clinical clerkship on medical students at the Department of General medicine of Japanese university hospitals remain to be clarified. This study aimed to determine how such education affects medical students’ self-evaluation of their clinical skills.Methods: We enrolled 5th-year-grade students at the Department of General Medicine, Saga University Hospital, Japan in 2017. The students were divided into those who were going to have Japanese traditional-style observation-based training mainly in the outpatient clinic (Group O) and those in the 2018, new-style, hands-on clinical clerkship as one of the group practice members in outpatient and inpatient clinics (Group H). A questionnaire survey using the 4-point Likert scale for self-evaluation of the students’ clinical skills at the beginning and the end of their training was conducted in both groups. The pre- and post-training scores of each item in both groups were compared and analyzed using the Mann–Whitney test.Results: All 99 students in Group O and 121 of 123 students in Group H answered the questionnaires. The response rate was 99%. Two items regarding the abilities of “can perform a systemic physical examination quickly and efficiently” and “can clearly explain the current medical condition, therapeutic options, or risks associated with treatment, and discuss the process for obtaining informed consent” showed higher scores in the post-training survey in Group H than in Group O. There were no differences in these scores in the pre-training survey between the two groups.Conclusion: A hands-on clinical clerkship at the Department of General medicine in a university hospital in Japan provided medical students with higher self-confidence in their skills of performing a physical examination and better understanding of patients’ treatment options and the process of informed consent than observation-based training.Keywords: general medicine, hands-on clinical clerkship, medical education, observation-based training
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- 2022
21. History of Falls and Bedriddenness Ranks are Useful Predictive Factors for in-Hospital Falls: A Single-Center Retrospective Observational Study Using the Saga Fall Risk Model
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Hirata R, Tago M, Katsuki NE, Oda Y, Tokushima M, Tokushima Y, Hirakawa Y, Yamashita S, Aihara H, Fujiwara M, and Yamashita SI
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bedridden ,bedriddenness ranks ,fall ,predictive model ,validation ,saga fall risk model 2 ,Medicine (General) ,R5-920 - Abstract
Risa Hirata,1 Masaki Tago,1 Naoko E Katsuki,1 Yoshimasa Oda,2 Midori Tokushima,1 Yoshinori Tokushima,1 Yuka Hirakawa,1 Shun Yamashita,1 Hidetoshi Aihara,1 Motoshi Fujiwara,1 Shu-ichi Yamashita1 1Department of General Medicine, Saga University Hospital, Saga, Japan; 2Department of General Medicine, Yuai-Kai Foundation and Oda Hospital, Saga, JapanCorrespondence: Masaki Tago, Department of General Medicine, Saga University Hospital, 5-1-1 Nabeshima, Saga, 849-8501, Japan, Tel +81-952-34-3238, Fax +81-952-34-2029, Email tagomas@cc.saga-u.ac.jpIntroduction: In our former study, we had validated the previously developed predictive model for in-hospital falls (Saga fall risk model) using eight simple factors (age, sex, emergency admission, department of admission, use of hypnotic medications, history of falls, independence of eating, and Bedriddenness ranks [BRs]), proving its high reliability. We found that only admission to the neurosurgery department, history of falls, and BRs had significant relationships with falls. In the present study, we aimed to clarify whether each of these three items had a significant relationship with falls in a different group of patients.Methods: This was a single-center based, retrospective study in an acute care hospital in a rural city of Japan. We enrolled all inpatients aged 20 years or older admitted from April 2015 to March 2018. We randomly selected patients to fulfill the required sample size. We performed multivariable logistic regression analysis using forced entry on the association between falls and each of the eight items in the Saga fall risk model 2.Results: A total of 2932 patients were randomly selected, of whom 95 (3.2%) fell. The median age was 79 years, and 49.9% were men. Multivariable analysis showed that female sex (odds ratio [OR] 0.6, 95% confidence interval [CI] 0.39– 0.93, p = 0.022), having a history of falls (OR 1.9, 95% CI 1.16– 2.99, p = 0.010), requiring help with eating (OR 1.9, 95% CI 1.12– 3.35, p = 0.019), BR of A (OR 6.6, 95% CI 2.82– 15.30, p < 0.001), BR of B (OR 7.5, 95% CI 2.95– 19.06, p < 0.001), and BR of C (OR 4.1, 95% CI 1.53– 11.04, p = 0.005) were significantly associated with falls.Conclusion: History of falls and BRs were independently associated with in-hospital falls.Keywords: bedridden, Bedriddenness ranks, fall, predictive model, validation, Saga fall risk model 2
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- 2022
22. LHC Dark Matter Working Group: Next-generation spin-0 dark matter models
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Abe, T, Afik, Y, Albert, A, Anelli, CR, Barak, L, Bauer, M, Behr, JK, Bell, NF, Boveia, A, Brandt, O, Busoni, G, Carpenter, LM, Chen, YH, Doglioni, C, Elliot, A, Fujiwara, M, Genest, MH, Gerosa, R, Gori, S, Gramling, J, Grohsjean, A, Gustavino, G, Hahn, K, Haisch, U, Henkelmann, L, Hisano, J, Huitfeldt, A, Ippolito, V, Kahlhoefer, F, Landsberg, G, Lowette, S, Maier, B, Maltoni, F, Muehlleitner, M, No, JM, Pani, P, Polesello, G, Price, DD, Robens, T, Rovelli, G, Rozen, Y, Sanderson, IW, Santos, R, Sevova, S, Sperka, D, Sung, K, Tait, TMP, Terashi, K, Ungaro, FC, Vryonidou, E, Yu, SS, Wu, SL, and Zhou, C
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hep-ex ,hep-ph ,Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics - Abstract
Dark matter (DM) simplified models are by now commonly used by the ATLAS and CMS Collaborations to interpret searches for missing transverse energy (ETmiss). The coherent use of these models sharpened the LHC DM search program, especially in the presentation of its results and their comparison to DM direct-detection (DD) and indirect-detection (ID) experiments. However, the community has been aware of the limitations of the DM simplified models, in particular the lack of theoretical consistency of some of them and their restricted phenomenology leading to the relevance of only a small subset of ETmiss signatures. This document from the LHC Dark Matter Working Group identifies an example of a next-generation DM model, called 2HDM+a, that provides the simplest theoretically consistent extension of the DM pseudoscalar simplified model. A comprehensive study of the phenomenology of the 2HDM+a model is presented, including a discussion of the rich and intricate pattern of mono-X signatures and the relevance of other DM as well as non-DM experiments. Based on our discussions, a set of recommended scans are proposed to explore the parameter space of the 2HDM+a model through LHC searches. The exclusion limits obtained from the proposed scans can be consistently compared to the constraints on the 2HDM+a model that derive from DD, ID and the DM relic density.
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- 2020
23. Persistent problems in the construction of matrix population models
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Kendall, BE, Fujiwara, M, Diaz-Lopez, J, Schneider, S, Voigt, J, and Wiesner, S
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COMADRE Animal Matrix Database ,Lefkovitch matrix ,Leslie matrix ,Matrix population models ,Model construction ,Model validity ,MD Multidisciplinary ,Ecology - Abstract
Matrix population models (MPMs) are powerful tools for translating demographic and life history information into a form that can be used to address a wide range of research topics, such as projecting population dynamics, evaluating stressor impacts on populations, and studying life history evolution. However, the reliability of such studies depends on the MPM being constructed in a way that accurately reflects the species’ life history. We highlight three errors commonly encountered in published MPMs: (1) failing to include survival in the fertility coefficient; (2) introducing a one-year delay in age at first reproduction; and (3) incorrectly calculating the growth rate out of a stage class. We review the sources of such errors and provide new analyses revealing the impact of such errors on model predictions, using lionfish and American alligator models as examples. To quantify the prevalence of such errors we examined and scored the original publications underlying the models in the COMADRE Animal Matrix Database. The first two errors were found in 34% and 62%, respectively, of the published studies; nearly all were in models that used a “postbreeding census” representation of the life cycle (in which newborns—eggs, neonates, fledglings, etc.—are explicitly included). Of the studies where stages may last longer than one time step, 53% constructed the growth rate using inappropriate formulas for estimating the asymptotic population growth rate or its sensitivity to demographic parameters. These results suggest that further efforts may be required to educate biologists on the construction of MPMs, perhaps in concert with the development of new software tools. Furthermore, the conclusions of many studies that are based on MPMs may need to be re-examined, and synthetic studies using the COMADRE Database need to be accompanied by careful examination of the underlying studies.
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- 2019
24. General Medicine Departments of Japanese Universities Contribute to Medical Education in Clinical Settings: A Descriptive Questionnaire Study
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Tago M, Shikino K, Hirata R, Watari T, Yamashita S, Tokushima Y, Tokushima M, Aihara H, Katsuki NE, Fujiwara M, and Yamashita SI
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clinical clerkship ,general medicine ,medical education ,specialty program ,university ,Medicine (General) ,R5-920 - Abstract
Masaki Tago,1 Kiyoshi Shikino,2 Risa Hirata,1 Takashi Watari,3 Shun Yamashita,1 Yoshinori Tokushima,1 Midori Tokushima,1 Hidetoshi Aihara,1 Naoko E Katsuki,1 Motoshi Fujiwara,1 Shu-ichi Yamashita1 1Department of General Medicine, Saga University Hospital, Saga, Japan; 2Department of General Medicine, Chiba University Hospital, Chiba, Japan; 3General Medicine Center, Shimane University Hospital, Shimane, JapanCorrespondence: Masaki Tago, Department of General Medicine, Saga University Hospital, 5-1-1 Nabeshima, Saga, 849-8501, Japan, Email tagomas@cc.saga-u.ac.jpBackground: It is unclear how much effort Japanese university general medicine (GM) departments, which teach basic medical skills and have a high affinity for clinical practice, devote to medical education, particularly undergraduate education. This study aimed to clarify the contribution of GM departments of Japanese universities to medical education.Patients and Methods: This was a questionnaire-based descriptive study of GM departments of Japanese universities. We sent the questionnaire created using Google Forms by email, and the universities responded by Internet. The department chairperson of the universities’ main hospital was responsible for completing the questionnaire. It covered the number of staff, inpatients over the previous 3 years, affiliated hospitals, classroom lectures, and practical training sessions per year for each academic year in medical faculty and students accepted for clinical clerkship. Items also included the effort for clinical training, research, and education and the effort for undergraduate, initial clinical residency, and specialty program training.Results: In all, 46 of 71 universities responded, and we included 43 in our analysis. The median number of medical staff was 7; the median number of inpatients over the previous 3 years was 76. The median number of classroom lectures of the GM department was 1 for 1st-year, 5 for 3rd-year, 9 for 4th-year, and 0 for 2nd-, 5th-, and 6th-year students. The median total number of accepted students for clinical clerkship was 120. The median educational effort of the GM department was 30. With total educational effort set at 100, the median effort for undergraduate education was 45, for postgraduate residency 30, and for specialty program training 20.Conclusion: The undergraduate medical education by GM departments of Japanese universities was provided mainly in clinical settings for almost all medical students. A focus on exposing students to GM in early academic years would improve the educational environment.Keywords: clinical clerkship, general medicine, medical education, specialty program, university
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- 2022
25. Incidence of potential candidates for kidney-sparing surgery in upper tract urothelial carcinoma : Analysis using radical nephroureterectomy specimens
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Matsumoto, S., primary, Waseda, Y., additional, Kimura, T., additional, Suzuki, K., additional, Hasegawa, A., additional, Tanaka, H., additional, Ikeda, R., additional, Yoshitomi, K., additional, Chen, W., additional, Fan, B., additional, Kobayashi, M., additional, Fujiwara, M., additional, Nakamura, Y., additional, Ishikawa, Y., additional, Fukuda, S., additional, Yoshida, S., additional, and Fujii, Y., additional
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- 2024
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26. Real-world outcomes of first-line systematic treatment in advanced upper urinary tract urothelial carcinoma patients with renal impairment: YUSHIMA-04 study
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Kimura, T., primary, Fujiwara, M., additional, Matsumoto, S., additional, Yoshitomi, K., additional, Kobayashi, M., additional, Fan, B., additional, Nakamura, Y., additional, Ishikawa, Y., additional, Fukuda, S., additional, Waseda, Y., additional, Tanaka, H., additional, Yoshida, S., additional, Takazawa, R., additional, Sakai, Y., additional, Koga, F., additional, Saito, K., additional, Yano, M., additional, Tsukamoto, T., additional, Okuno, T., additional, Kageyama, Y., additional, Otsuka, Y., additional, Nagahama, K., additional, and Fujii, Y., additional
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- 2024
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27. Outcomes of partial and radical nephrectomy in patients with pathological T3a upstaging of clinical T1 renal cell carcinoma: an analysis from the INternational Marker Consortium for Renal Cancer (INMARC) Cohort
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Fukuda, S., primary, Kobayashi, M., additional, Chen, W., additional, Fujiwara, M., additional, Nakamura, Y., additional, Ishikawa, Y., additional, Nakayama, A., additional, Meagher, M., additional, Patil, D., additional, Waseda, Y., additional, Tanaka, H., additional, Yoshida, S., additional, Saito, K., additional, Derweesh, I.H., additional, Master, V.A., additional, and Fujii, Y., additional
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- 2024
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28. Comparison of the utility of worst vs. global Gleason grade group in MRI-US fusion biopsy for predicting postprostatectomy biochemical recurrence
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Kobayashi, M., primary, Yoshitomi, K., additional, Fan, B., additional, Fujiwara, M., additional, Nakamura, Y., additional, Ishikawa, Y., additional, Fukuda, S., additional, Waseda, Y., additional, Tanaka, H., additional, Yoshida, S., additional, and Fujii, Y., additional
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- 2024
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29. Tetramodal bladder-preservation therapy incorporating induction chemoradiotherapy and consolidative partial cystectomy with pelvic lymphnode dissection for muscle-invasive bladder cancer: Long-term oncologic outcomes of 201 patients
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Tanaka, H., primary, Fujiwara, M., additional, Hasegawa, A., additional, Tanaka, H., additional, Suzuki, K., additional, Kimura, T., additional, Yasujima, R., additional, Ito, T., additional, Ikeda, R., additional, Matsumoto, S., additional, Yoshitomi, K., additional, Kobayashi, M., additional, Nakamura, Y., additional, Fan, B., additional, Chen, W., additional, Ishikawa, Y., additional, Fukuda, S., additional, Waseda, Y., additional, Yoshida, S., additional, Yoshimura, R., additional, Kihara, K., additional, and Fujii, Y., additional
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- 2024
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30. Isoscalar Giant Monopole, Dipole, and Quadrupole Resonances in $^{90,92}$Zr and $^{92}$Mo
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Gupta, Y. K., Howard, K. B., Garg, U., Matta, J. T., Senyigit, M., Itoh, M., Ando, S., Aoki, T., Uchiyama, A., Adachi, S., Fujiwara, M., Iwamoto, C., Tamii, A., Akimune, H., Kadono, C., Matsuda, Y., Nakahara, T., Furuno, T., Kawabata, T., Tsumura, M., Harakeh, M. N., and Kalantar-Nayestanaki, N.
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Nuclear Experiment ,Nuclear Theory - Abstract
The isoscalar giant monopole, dipole, and quadrupole strength distributions have been deduced in $^{90, 92}$Zr, and $^{92}$Mo from "background-free" spectra of inelastic $\alpha$-particle scattering at a beam energy of 385 MeV at extremely forward angles, including 0$^{\circ}$. These strength distributions were extracted by a multipole-decomposition analysis based on the expected angular distributions of the respective multipoles. All these strength distributions for the three nuclei practically coincide with each other, affirming that giant resonances, being collective phenomena, are not influenced by nuclear shell structure near $A\sim$90, contrary to the claim in a recent measurement., Comment: 12 pages, 12 figures; Accepted for publication in Phys. Rev. C. arXiv admin note: text overlap with arXiv:1607.02198
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- 2018
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31. Differential cross section and photon-beam asymmetry for the gamma p -> pi- Delta++(1232) reaction at forward pi- angles for Egamma=1.5-2.95 GeV
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Kohri, H., Shiu, S. H., Chang, W. C., Yanai, Y., Ahn, D. S., Ahn, J. K., Chen, J. Y., Date, S., Ejiri, H., Fujimura, H., Fujiwara, M., Fukui, S., Gohn, W., Hicks, K., Hosaka, A., Hotta, T., Hwang, S. H., Imai, K., Ishikawa, T., Joo, K., Kato, Y., Kon, Y., Lee, H. S., Maeda, Y., Mibe, T., Miyabe, M., Morino, Y., Muramatsu, N., Nakano, T., Nakatsugawa, Y., Nam, S. i., Niiyama, M., Noumi, H., Ohashi, Y., Ohta, T., Oka, M., Parker, J. D., Rangacharyulu, C., Ryu, R. Y., Sawada, T., Shimizu, H., Strokovsky, E. A., Sugaya, Y., Sumihama, M., Tsunemi, T., Uchida, M., Ungaro, M., Wang, S. Y., and Yosoi, M.
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Nuclear Experiment - Abstract
Differential cross sections and photon-beam asymmetries for the gamma p -> pi- Delta++(1232) reaction have been measured for 0.7
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- 2018
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32. Photoproduction of $\Lambda$ and $\Sigma^{0}$ hyperons off protons with linearly polarized photons at $E_{\gamma} = 1.5-3.0$ GeV
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Shiu, S. H., Kohri, H., Chang, W. C., Ahn, D. S., Ahn, J. K., Chen, J. Y., Date, S., Ejiri, H., Fujimura, H., Fujiwara, M., Fukui, S., Gohn, W., Hicks, K., Hotta, T., Hwang, S. H., Imai, K., Ishikawa, T., Joo, K., Kato, Y., Kon, Y., Lee, H. S., Maeda, Y., Mibe, T., Miyabe, M., Mizutani, K., Morino, Y., Muramatsu, N., Nakano, T., Nakatsugawa, Y., Niiyama, M., Noumi, H., Ohashi, Y., Ohta, T., Oka, M., Parker, J. D., Rangacharyulu, C., Ryu, S. Y., Sawada, T., Shimizu, H., Sugaya, Y., Sumihama, M., Tsunemi, T., Uchida, M., Ungaro, M., and Yosoi, M.
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Nuclear Experiment ,Nuclear Theory - Abstract
We report the measurement of the $\gamma p \rightarrow K^{+}\Lambda$ and $\gamma p \rightarrow K^{+}\Sigma^{0}$ reactions at SPring-8. The differential cross sections and photon-beam asymmetries are measured at forward $K^{+}$ production angles using linearly polarized tagged-photon beams in the range of $E_{\gamma}=1.5$--3.0 GeV. With increasing photon energy, the cross sections for both $\gamma p \rightarrow K^{+}\Lambda$ and $\gamma p \rightarrow K^{+}\Sigma^{0}$ reactions decrease slowly. Distinct narrow structures in the production cross section have not been found at $E_{\gamma}=1.5$--3.0 GeV. The forward peaking in the angular distributions of cross sections, a characteristic feature of $t$-channel exchange, is observed for the production of $\Lambda$ in the whole observed energy range. A lack of similar feature for $\Sigma^{0}$ production reflects a less dominant role of $t$-channel contribution in this channel. The photon-beam asymmetries remain positive for both reactions, suggesting the dominance of $K^{*}$ exchange in the $t$ channel. These asymmetries increase gradually with the photon energy, and have a maximum value of +0.6 for both reactions. Comparison with theoretical predictions based on the Regge trajectory in the $t$ channel and the contributions of nucleon resonances indicates the major role of $t$-channel contributions as well as non-negligible effects of nucleon resonances in accounting for the reaction mechanism of hyperon photoproduction in this photon energy regime., Comment: published version, two-column format, 10 pages, 8 figures
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- 2017
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33. Silicon photonic processor of two-qubit entangling quantum logic
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Santagati, R., Silverstone, J. W., Strain, M. J., Sorel, M., Miki, S., Yamashita, T., Fujiwara, M., Sasaki, M., Terai, H., Tanner, M. G., Natarajan, C. M., Hadfield, R. H., O'Brien, J. L., and Thompson, M. G.
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Quantum Physics - Abstract
Entanglement is a fundamental property of quantum mechanics, and is a primary resource in quantum information systems. Its manipulation remains a central challenge in the development of quantum technology. In this work, we demonstrate a device which can generate, manipulate, and analyse two-qubit entangled states, using miniature and mass-manufacturable silicon photonics. By combining four photon-pair sources with a reconfigurable six-mode interferometer, embedding a switchable entangling gate, we generate two-qubit entangled states, manipulate their entanglement, and analyse them, all in the same silicon chip. Using quantum state tomography, we show how our source can produce a range of entangled and separable states, and how our switchable controlled-Z gate operates on them, entangling them or making them separable depending on its configuration., Comment: The data from this study are available from the open data repository Figshare at https://doi.org/10.6084/m9.figshare.5464381.v1
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- 2017
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34. Differential cross section and photon beam asymmetry for the gamma p -> pi+ n reaction at forward pi+ angles at Egamma=1.5-2.95 GeV
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Kohri, H., Wang, S. Y., Shiu, S. H., Chang, W. C., Yanai, Y., Ahn, D. S., Ahn, J. K., Chen, J. Y., Date, S., Ejiri, H., Fujimura, H., Fujiwara, M., Fukui, S., Gohn, W., Hicks, K., Hosaka, A., Hotta, T., Hwang, S. H., Imai, K., Ishikawa, T., Joo, K., Kato, Y., Kim, S. H., Kon, Y., Lee, H. S., Maeda, Y., Mibe, T., Miyabe, M., Morino, Y., Muramatsu, N., Nakano, T., Nakatsugawa, Y., Niiyama, M., Noumi, H., Oh, Y., Ohashi, Y., Ohta, T., Oka, M., Parker, J. D., Rangacharyulu, C., Ryu, S. Y., Sawada, T., Shimizu, H., Sugaya, Y., Sumihama, M., Tsunemi, T., Uchida, M., Ungaro, M., and Yosoi, M.
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Nuclear Experiment - Abstract
Differential cross sections and photon beam asymmetries for the gamma p -> pi+ n reaction have been measured for 0.6
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- 2017
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35. Charge states of nitrogen-vacancy centers in Fermi level controlled diamond n-i-n junctions.
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Shimizu, M., Makino, T., Kato, H., Fujiwara, M., Ogura, M., Mizuochi, N., and Hatano, M.
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FERMI level ,NANODIAMONDS ,FERMI energy ,IRRADIATION ,DIAMONDS ,LASERS ,DOPING agents (Chemistry) ,JOSEPHSON junctions - Abstract
Control of the charge state of the nitrogen-vacancy (NV) center is crucial because of its instability and its transitions between the negative (NV
– ) and neutral (NV0 ) NV charge states under laser irradiation In this study, we fabricated an n-i-n junction, with an i-layer sandwiched between two phosphorus-doped n-layers; then, we measured the charge state of NV centers under steady state and laser irradiation in a known band structure where the Fermi energy changes gradually. The steady-state charge state measured by a nondestructive single shot exhibited stable NV– and NV0 signals when the Fermi level was even slightly above and below the transition level, respectively. This result indicates that the charge state can be significantly stabilized through band engineering. Both charge-state populations were observed only when the Fermi level was close to the transition level. Under continuous green laser irradiation, the ratio of NV– measured by the photoluminescence spectra changed gradually with the Fermi level in the depletion layer because of the balance between excitation from the laser and the supply of charge from the band. This outcome agrees reasonably with the calculated bands. Furthermore, we measured the PL spectra of the ensemble NV centers and discovered that their charge state can be well-controlled, as in the single NV center. The charge state of the i-layer at the interface can be stabilized by depositing a thin n-layer on the surface. These results would contribute significantly to improve sensor performance. [ABSTRACT FROM AUTHOR]- Published
- 2023
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36. Medical 15O production via the 16O(γ,n)15O reaction for blood flow examination
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Fujiwara, M., Kurosawa, M., Tamura, M., Kudomi, N., and Nishimura, M.
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- 2021
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37. Change in Antidepressant Use After Initiation of ADHD Medication in Japanese Adults with Comorbid Depression: A Real-World Database Analysis
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Sakai C, Tsuji T, Nakai T, Namba Y, Mishima H, Fujiwara M, and Matsunaga H
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attention-deficit/hyperactivity disorder ,mdd ,antidepressants ,anxiolytics ,hypnotics ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Chika Sakai,1 Toshinaga Tsuji,1 Toru Nakai,1 Yuki Namba,1 Hirokazu Mishima,1 Masakazu Fujiwara,2 Hisato Matsunaga3 1Medical Affairs Department, Shionogi & Co. Ltd, Osaka, Japan; 2Data Science Office, Shionogi & Co. Ltd, Osaka, Japan; 3Department of Neuropsychiatry, Hyogo College of Medicine, Hyogo, JapanCorrespondence: Toshinaga TsujiMedical Affairs Department, Shionogi & Co. Ltd, 3-1-8, Doshomachi, Chuo-ku, Osaka-shi, Osaka, 541-0045, JapanTel +81 6 6209 7412Fax +81 6 6202 2239Email toshinaga.tsuji@shionogi.co.jpPurpose: To better understand the treatment of comorbid depression in adults with attention-deficit/hyperactivity disorder (ADHD) by investigating the prescription patterns of antidepressants, anxiolytics, and hypnotics after commencing ADHD medication.Patients and Methods: In this retrospective observational study in Japan, the data of patients initiating ADHD medication while already receiving antidepressants (ADHD group) and of patients prescribed antidepressants but not diagnosed with ADHD (control group) were extracted from an electronic medical record database. Additionally, one-to-one matching for patients in both groups was performed using sex, age, baseline dosage of antidepressants, and any comorbid psychiatric disorders as covariates. The observation period included a 1-month baseline period and a 6-month follow-up period. The percentage of patients prescribed antidepressants and the mean prescribed dosages were compared between matched-cohort groups. Prescriptions for anxiolytics and hypnotics were also assessed.Results: In the matched cohorts, consisting of 239 patients in the ADHD group and 239 patients from the unmatched control cohort of 10,485, the percentage of patients prescribed antidepressants decreased from baseline in both groups to 94.1% in the ADHD group and 89.5% in the control group during the first month of follow-up, and 77.0% and 78.7%, respectively, during the last month. There were no significant differences between groups in the percentages of patients prescribed antidepressants or in the mean prescribed dosages of antidepressants at any time point over the follow-up period. Prescribed dosages of anxiolytics and hypnotics tended to be lower in the ADHD group.Conclusion: The two groups were medicated similarly with respect to their depressive symptoms over 6 months. Our results suggest that in patients with ADHD and comorbid depression, which is more likely to be more severe than in depression without ADHD, depressive symptoms are managed following initiation of add-on ADHD medication, without requiring higher antidepressant dosages than in patients with depression only.Keywords: attention-deficit/hyperactivity disorder, MDD, antidepressants, anxiolytics, hypnotics
- Published
- 2021
38. Are There Nuclear Structure Effects on the Isoscalar Giant Monopole Resonance and Nuclear Incompressibility near A~90?
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Gupta, Y. K., Garg, U., Howard, K. B., Matta, J. T., Senyigit, M., Itoh, M., Ando, S., Aoki, T., Uchiyama, A., Adachi, S., Fujiwara, M., Iwamoto, C., Tamii, A, Akimune, H., Kadono, C., Matsuda, Y., Nakahara, T., Furuno, T., Kawabata, T., Tsumura, M., Harakeh, M. N., and Kalantar-Nayestanaki, N.
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Nuclear Experiment - Abstract
"Background-free" spectra of inelastic $\alpha$-particle scattering have been measured at a beam energy of 385 MeV in $^{90, 92}$Zr and $^{92}$Mo at extremely forward angles, including 0$^{\circ}$. The ISGMR strength distributions for the three nuclei coincide with each other, establishing clearly that nuclear incompressibility is not influenced by nuclear shell structure near $A\sim$90 as was claimed in recent measurements., Comment: 5 pages, 4 figures; accepted for publication in Phys. Lett. B
- Published
- 2016
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39. Interference effect between $\phi$ and $\Lambda(1520)$ production channels in the $\gamma p \rightarrow K^+K^-p$ reaction near threshold
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Ryu, S. Y., Ahn, J. K., Nakano, T., Ahn, D. S., Ajimura, S., Akimune, H., Asano, Y., Chang, W. C., Chen, J. Y., Date, S., Ejiri, H., Fujimura, H., Fujiwara, M., Fukui, S., Hasegawa, S., Hicks, K., Horie, K., Hotta, T., Hwang, S. H., Imai, K., Ishikawa, T., Iwata, T., Kato, Y., Kawai, H., Kino, K., Kohri, H., Kon, Y., Kumagai, N., Lin, P. J., Maeda, Y., Makino, S., Matsuda, T., Matsuoka, N., Mibe, T., Miyabe, M., Miyachi, M., Morino, Y., Muramatsu, N., Murayama, R., Nakatsugawa, Y., Nam, S. i., Niiyama, M., Nomachi, M., Ohashi, Y., Ohkuma, H., Ohta, T., Ooba, T., Oshuev, D. S., Parker, J. D., Rangacharyulu, C., Sakaguchi, A., Sawada, T., Shagin, P. M., Shiino, Y., Shimizu, H., Strokovsky, E. A., Sugaya, Y., Sumihama, M., Tokiyasu, A. O., Toi, Y., Toyokawa, H., Tsunemi, T., Uchida, M., Ungaro, M., Wakai, A., Wang, C. W., Wang, S. C., Yonehara, K., Yorita, T., Yoshimura, M., Yosoi, M., and Zegers, R. G. T.
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Nuclear Experiment - Abstract
The $\phi$-$\Lambda(1520)$ interference effect in the $\gamma p\to K^+K^-p$ reaction has been measured for the first time in the energy range from 1.673 to 2.173 GeV. The relative phases between $\phi$ and $\Lambda(1520)$ production amplitudes were obtained in the kinematic region where the two resonances overlap. The measurement results support strong constructive interference when $K^+K^-$ pairs are observed at forward angles, but destructive interference for proton emission at forward angles. Furthermore, the observed interference effect does not account for the $\sqrt{s}=2.1$ GeV bump structure in forward differential cross sections for $\phi$ photoproduction. This fact suggests possible exotic structures such as a hidden-strangeness pentaquark state, a new Pomeron exchange and rescattering processes via other hyperon states.
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- 2016
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40. Research Trends in General Medicine Departments of University Hospitals in Japan
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Watari T, Tago M, Shikino K, Yamashita S, Katsuki NE, and Fujiwara M
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general medicine ,research ,academic activity ,Medicine (General) ,R5-920 - Abstract
Takashi Watari,1,2,* Masaki Tago,3,* Kiyoshi Shikino,4 Shun Yamashita,3 Naoko E Katsuki,3 Motoshi Fujiwara,3 Shu-ichi Yamashita3 1General Medicine Center, Shimane University Hospital, Shimane, Japan; 2Master of Healthcare Quality and Patient Safety, Harvard Medical School, Boston, MA, USA; 3Department of General Medicine, Saga University Hospital, Saga, Japan; 4Department of General Medicine, Chiba University Hospital, Chiba, Japan*These authors contributed equally to this workCorrespondence: Masaki TagoDepartment of General Medicine, Saga University Hospital, 5-1-1 Nabeshima, Saga, 849-8501, JapanTel +81 952 34 3238Fax +81 952 34 2029Email tagomas@cc.saga-u.ac.jpPurpose: The training of generalist physicians in university hospitals needs to emphasize development of their research role in order to continue improving their research capacity and their standing in academic hospitals in Japan. This cross-sectional descriptive study aimed to survey departments of general medicine (GM) in university hospitals in Japan to identify the research areas and themes pursued by academic generalist physicians.Patients and Methods: The heads of the departments of GM from 71 university hospitals in Japan were enrolled. The main outcomes studied were the identification of the main research areas and themes in academic departments of GM, based on the classification of the National Grants-in-Aid for Scientific Research (KAKENHI): clinical research, public health, preventive medicine, medical education, basic science, health services and safety and quality.Results: We received 47 of 71 replies (66.2% response rate). Clinical research was the most common area of research (62%), followed by public health and preventive medicine (14%), medical education (11%), and basic sciences (9%). Only one department identified health services and safety and quality as a research area (2%). There was marked variability in research areas across the different departments, with 23% of the research targeting the highest specialties, particularly organ-specific research in the fields of gastroenterology, cardiology, immunology, neurology, metabolic endocrinology, and hematology-oncology.Conclusion: The training of generalist physicians in university hospitals needs to emphasize development of their research role in order to continue improving the research capacity and the standing generalist physicians in academic hospitals in Japan.Keywords: general medicine, research, academic activity
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- 2021
41. Laser cooling of antihydrogen atoms
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Baker, C. J., Bertsche, W., Capra, A., Carruth, C., Cesar, C. L., Charlton, M., Christensen, A., Collister, R., Mathad, A. Cridland, Eriksson, S., Evans, A., Evetts, N., Fajans, J., Friesen, T., Fujiwara, M. C., Gill, D. R., Grandemange, P., Granum, P., Hangst, J. S., Hardy, W. N., Hayden, M. E., Hodgkinson, D., Hunter, E., Isaac, C. A., Johnson, M. A., Jones, J. M., Jones, S. A., Jonsell, S., Khramov, A., Knapp, P., Kurchaninov, L., Madsen, N., Maxwell, D., McKenna, J. T. K., Menary, S., Michan, J. M., Momose, T., Mullan, P. S., Munich, J. J., Olchanski, K., Olin, A., Peszka, J., Powell, A., Pusa, P., Rasmussen, C. Ø., Robicheaux, F., Sacramento, R. L., Sameed, M., Sarid, E., Silveira, D. M., Starko, D. M., So, C., Stutter, G., Tharp, T. D., Thibeault, A., Thompson, R. I., van der Werf, D. P., and Wurtele, J. S.
- Published
- 2021
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42. Splitting of ISGMR strength in the light-mass nucleus $^{24}$Mg due to ground-state deformation
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Gupta, Y. K., Garg, U., Matta, J. T., Patel, D., Peach, T., Hoffman, J., Yoshida, K., Itoh, M., Fujiwara, M., Hara, K., Hashimoto, H., Nakanishi, K., Yosoi, M., Sakaguchi, H., Terashima, S., Kishi, S., Murakami, T., Uchida, M., Yasuda, Y., Akimune, H., Kawabata, T., and Harakeh, M. N.
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Nuclear Experiment ,Nuclear Theory - Abstract
The isoscalar giant monopole resonance (ISGMR) strength distribution in $^{24}$Mg has been determined from background-free inelastic scattering of 386-MeV $\alpha$ particles at extreme forward angles, including 0$^{\circ}$. The ISGMR strength distribution has been observed for the first time to have a two-peak structure in a light-mass nucleus. This splitting of ISGMR strength is explained well by microscopic theory in terms of the prolate deformation of the ground state of $^{24}$Mg., Comment: 5 pages, 4 figures; to be published in Phys. Lett. B
- Published
- 2015
43. Broadband microwave antenna for uniform manipulation of millimeter-scale volumes of diamond quantum sensors.
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Takemura, Y., Hayashi, K., Yoshii, Y., Saito, M., Onoda, S., Abe, H., Ohshima, T., Taniguchi, T., Fujiwara, M., Morishita, H., Ohki, I., and Mizuochi, N.
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MICROWAVE antennas ,ELECTRON spin ,DETECTORS ,SKIN effect ,ANTENNAS (Electronics) - Abstract
Quantum sensors based on nitrogen-vacancy (NV) centers in diamond are expected to demonstrate a wide variety of applications. For high-sensitivity quantum sensors with NV center ensembles, uniform manipulation of the electron spins of the NV centers in large volumes is required. In addition, a broad microwave frequency bandwidth for manipulating the NV centers' electron spin is necessary for vector magnetometry and measurement under a finite static magnetic field. Here, we demonstrate a broadband microwave antenna for uniform manipulation of millimeter-scale volumes of diamond quantum sensors. The simulation shows that the current is distributed at both edges of the loop coil of a single copper plate due to the skin effect. The loop coil acts like a Helmholtz coil, which realizes uniformity in the z-direction of the microwave magnetic field (B
1 ). The plate structure has a higher mechanical stability, durability, and a larger heat capacity than the Helmholtz coil, due to its large volume. The antenna achieves a higher performance than previously reported antennae, with a maximal B1 of 4.5 G, a broad bandwidth of 287 ± 6 MHz, and a peak-to-peak variation of 9.2 % over a 3.1 mm3 cylinder volume. These performances show that the presented antenna is suitable for manipulating solid-state spin ensembles for high-sensitivity quantum sensors. [ABSTRACT FROM AUTHOR]- Published
- 2022
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- View/download PDF
44. A search for two body muon decay signals
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Bayes, R., Bueno, J., Davydov, Yu. I., Depommier, P., Faszer, W., Fujiwara, M. C., Gagliardi, C. A., Gaponenko, A., Gill, D. R., Grossheim, A., Gumplinger, P., Hasinoff, M. D., Henderson, R. S., Hillairet, A., Hu, J., Koetke, D. D., MacDonald, R. P., Marshall, G. M., Mathie, E. L., Mischke, R. E., Olchanski, K., Olin, A., Openshaw, R., Poutissou, J. -M., Poutissou, R., Selivanov, V., Sheffer, G., Shin, B., Stanislaus, T. D. S., Tacik, R., and Tribble, R. E.
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High Energy Physics - Experiment - Abstract
Lepton family number violation is tested by searching for $\mu^+\to e^+X^0$ decays among the 5.8$\times 10^8$ positive muon decay events analyzed by the TWIST collaboration. Limits are set on the production of both massless and massive $X^0$ bosons. The large angular acceptance of this experiment allows limits to be placed on anisotropic $\mu^+\to e^+X^0$ decays, which can arise from interactions violating both lepton flavor and parity conservation. Branching ratio limits of order $10^{-5}$ are obtained for bosons with masses of 13 - 80 MeV/c$^2$ and with different decay asymmetries. For bosons with masses less than 13 MeV/c$^{2}$ the asymmetry dependence is much stronger and the 90% limit on the branching ratio varies up to $5.8 \times 10^{-5}$. This is the first study that explicitly evaluates the limits for anisotropic two body muon decays., Comment: 7 pages, 5 figures, 2 tables, accepted by PRD
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- 2014
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45. Pth1r in Neural Crest Cells Regulates Nasal Cartilage Differentiation.
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Amano, K., Okuzaki, D., Kitaoka, Y., Kato, S., Fujiwara, M., Tanaka, S., and Iida, S.
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NEURAL crest ,DEVELOPMENTAL biology ,CARTILAGE ,BONE morphogenetic proteins ,ENDOCHONDRAL ossification ,HYOID bone ,NASAL septum - Abstract
Neural crest cells (NCC) arise from the dorsal margin of the neural plate border and comprise a unique cell population that migrates to and creates the craniofacial region. Although factors including Shh, Fgf8, and bone morphogenetic proteins have been shown to regulate these biological events, the role of parathyroid hormone 1 receptor (Pth1r) has been less studied. We generated an NCC-specific mouse model for Pth1r and researched gene expression, function, and interaction focusing on nasal cartilage framework and midfacial development. Wnt1-Cre;Pth1r
fl / fl ; Tomatofl /+ mice had perinatal lethality, but we observed short snout and jaws, tongue protrusion, reduced NCC-derived cranial length, increased mineralization in nasal septum and hyoid bones, and less bone mineralization at interfrontal suture in mutants at E18.5. Importantly, the mutant nasal septum and turbinate cartilage histologically revealed gradual, premature accelerated hypertrophic differentiation. We then studied the underlying molecular mechanisms by performing RNA seq analysis and unexpectedly found that expression of Ihh and related signaling molecules was enhanced in mutant nasomaxillary tissues. To see if Pth1r and Ihh signaling are associated, we generated a Wnt1-Cre; Ihhfl / fl ; Pth1rfl / fl ; Tomatofl /+ (DKO) mouse and compared the phenotypes to those of each single knockout mouse: Wnt1-Cre; Ihhfl / fl ; Pth1rfl /+ ; Tomatofl /+ (Ihh-CKO) and Wnt1-Cre;Ihhfl /+ ; Pth1rfl / fl ; Tomatofl /+ (Pth1r-CKO). Ihh-CKO mice displayed a milder effect. Of note, the excessive hypertrophic conversion of the nasal cartilage framework observed in Pth1r-CKO was somewhat rescued DKO embryos. Further, a half cAMP responsive element and the 4 similar sequences containing 2 mismatches were identified from the promoter to the first intron in Ihh gene. Gli1-CreERT2 ; Pth1rfl / fl ; Tomatofl /+ , a Pth1r-deficient model targeted in hedgehog responsive cells, demonstrated the enlarged hypertrophic layer and significantly more Tomato-positive chondrocytes accumulated in the nasal septum and ethmoidal endochondral ossification. Collectively, the data suggest a relevant Pth1r/Ihh interaction. Our findings obtained from novel mouse models for Pth1r signaling illuminate previously unknown aspects in craniofacial biology and development. [ABSTRACT FROM AUTHOR]- Published
- 2024
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- View/download PDF
46. Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production
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Baker, C. J., Bertsche, W., Capra, A., Cesar, C. L., Charlton, M., Mathad, A. Cridland, Eriksson, S., Evans, A., Evetts, N., Fabbri, S., Fajans, J., Friesen, T., Fujiwara, M. C., Grandemange, P., Granum, P., Hangst, J. S., Hayden, M. E., Hodgkinson, D., Isaac, C. A., Johnson, M. A., Jones, J. M., Jones, S. A., Jonsell, S., Kurchaninov, L., Madsen, N., Maxwell, D., McKenna, J. T. K., Menary, S., Momose, T., Mullan, P., Olchanski, K., Olin, A., Peszka, J., Powell, A., Pusa, P., Rasmussen, C. Ø., Robicheaux, F., Sacramento, R. L., Sameed, M., Sarid, E., Silveira, D. M., Stutter, G., So, C., Tharp, T. D., Thompson, R. I., van der Werf, D. P., and Wurtele, J. S.
- Published
- 2021
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- View/download PDF
47. Effect of Daikenchuto Therapy on Risk of Rectal Bleeding after IMRT for Prostate Cancer
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Fujiwara, M., primary, Nakayama, J., additional, Sakamoto, J., additional, and Higaki, A., additional
- Published
- 2023
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- View/download PDF
48. Pth1r Signal in Gli1+ Cells Maintains Postnatal Cranial Base Synchondrosis
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Amano, K., primary, Kitaoka, Y., additional, Kato, S., additional, Fujiwara, M., additional, Okuzaki, D., additional, Aikawa, T., additional, Kogo, M., additional, and Iida, S., additional
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- 2023
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- View/download PDF
49. Excitation of Giant Monopole Resonance in $^{208}$Pb and $^{116}$Sn Using Inelastic Deuteron Scattering
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Patel, D., Garg, U., Itoh, M., Akimune, H., Berg, G. P. A., Fujiwara, M., Harakeh, M. N., Iwamoto, C., Kawabata, T., Kawase, K., Matta, J. T., Murakami, T., Okamoto, A., Sako, T., Schlax, K. W., Takahashi, K., White, M., and Yosoi, M.
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Nuclear Experiment - Abstract
The excitation of the isoscalar giant monopole resonance (ISGMR) in $^{116}$Sn and $^{208}$Pb has been investigated using small-angle (including $0^\circ$) inelastic scattering of 100 MeV/u deuteron and multipole-decomposition analysis (MDA). The extracted strength distributions agree well with those from inelastic scattering of 100 MeV/u $\alpha$ particles. These measurements establish deuteron inelastic scattering at E$_d \sim$ 100 MeV/u as a suitable probe for extraction of the ISGMR strength with MDA, making feasible the investigation of this resonance in radioactive isotopes in inverse kinematics., Comment: 5 pages, 4 figures. To be published in Phys. Lett. B
- Published
- 2014
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- View/download PDF
50. In situ electromagnetic field diagnostics with an electron plasma in a Penning-Malmberg trap
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Amole, C., Ashkezari, M. D., Baquero-Ruiz, M., Bertsche, W., Butler, E., Capra, A., Cesar, C. L., Charlton, M., Deller, A., Evetts, N., Eriksson, S., Fajans, J., Friesen, T., Fujiwara, M. C., Gill, D. R., Gutierrez, A., Hangst, J. S., Hardy, W. N., Hayden, M. E., Isaac, C. A., Jonsell, S., Kurchaninov, L., Little, A., Madsen, N., McKenna, J. T. K., Menary, S., Napoli, S. C., Olchanski, K., Olin, A., Pusa, P., Rasmussen, C. Ø., Robicheaux, F., Sarid, E., Silveira, D. M., So, C., Stracka, S., Tharp, T., Thompson, R. I., van der Werf, D. P., and Wurtele, J. S.
- Subjects
Physics - Plasma Physics ,Nuclear Experiment ,Physics - Atomic Physics - Abstract
We demonstrate a novel detection method for the cyclotron resonance frequency of an electron plasma in a Penning-Malmberg trap. With this technique, the electron plasma is used as an in situ diagnostic tool for measurement of the static magnetic field and the microwave electric field in the trap. The cyclotron motion of the electron plasma is excited by microwave radiation and the temperature change of the plasma is measured non-destructively by monitoring the plasma's quadrupole mode frequency. The spatially-resolved microwave electric field strength can be inferred from the plasma temperature change and the magnetic field is found through the cyclotron resonance frequency. These measurements were used extensively in the recently reported demonstration of resonant quantum interactions with antihydrogen.
- Published
- 2014
- Full Text
- View/download PDF
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